def use_sum():
    '''
    算术运算符
    :return:
    '''
    a=5/2
    print(a)
    # 2.5

    # //表示是整除
    a=5//2
    print(a)
    # 2

# use_sum()


def use_compare():
    # 打印出true或者false
    print(3 > 5)

# use_compare()
